Valve.



VAN E. SANFORD.

V-ALVE. APPLICATION FILED MAR. 6. 1915.

, 179,225, Patented Apr. 11,1916.

Fiyl.

VE. Sanford.

atto'znua VAN E. SANFORD, OF ST. ALBANS, WEST VIRGINIA.

VALVE.

Application filed March 6, 1915.

T0 all 01mm it may concern Be it known that I, VAN E. SANFORD, a

citizen of the United States, residing at particularly to automatic cut oif valves for gas mains.

The principal object of the invention is the provision of an automatically operated valve which is simple, cheaply constructed and reliable and which will automatically cut off the gas upon a reduction of pressure in the mains so as to prevent explosions in residences and asphyxiation of the occupants resulting from a reduction of pressure in the mains which causes extinguishment of the flame at the lights or burners and the reestablishment of the pressures.

Further objects of the invention will appear as the following description is read in connection with the accompanying drawing. which forms a part of this application, and in which Figure 1 is a longitudinal sectional view showing the position of the valve when the supply is cut off to the house mains and in dotted lines the position when the supply is open to the house mains. Fig. 2 is a perspective view of the valve holding plug. Fig. 3 is a similar view of the valve removed from the plug.

In the specific embodiment of the invention as illustrated herein, I have shown the valve casing 1 of the improved device connected to the service and house main pipes 2 and 3, respectively, by suitable reducing units 4. The casing 1, as shown, is exteriorly threaded at opposite ends to receir e the unions or to otherwise connect the same with the supply and house main pipes and has one end closed by a wall 5 having an eccentrically positioned port 6. The opposite end of the casing is lnternally threaded and screwed therein 1s a plug 7 havlng an eccentrically positioned port 8 which when in position in the casing is oppositely disposed to the port 6. The inner end wall of the plug is machined on an angle to produce a valve seat 9 against which the gravi- Specification of Letters Patent.

Patented Apr. 11, 1916.

Serial N 0. 12,655.

tating flap valve 10 is adapted to rest and cover theport or inner end of the channel 8, as will be readily understood. Innuediatelyabove the seat 9 the plug is provided with a transverse rib 11 longitudinally slotted as shown at 12 to receive the pivoting shank or ear 13 formed on the valve 10.

This ear is pivotally connected 'to the rib 11 by a pin 14: and has a cam shaped inner end disposed within a vertical socket 15 arranged to be entered by the set screw 16 or any other suitable type of plunger carried by and passing through the casing 1.

In the adoption of any specific type of plunger its inner end will be located within the recess or socket 15 so as to hold the plug against accidental movement.

It will be noticed that if the valve is in raised position as shown in dotted lines in Fig. 1 that it is in direct line with the flowing fluid passing throughthe port 6 and as long as the fluid continues toflow it will be maintained in open position. When the pressure is materially reduced or out off the valve will gravitate to closed position, as shown, and upon a reestablishment of the pressure in the main no fluid will be allowed to pass the valve until the same is again opened by a depression of the plunger 16.

What is claimed is In a valve, a casing having a closed end provided with an eccentrically positioned port, a plug threadedly mounted in the opposite end of the casing and closing the same, said plug having an eccentrically positioned port arranged out of alinement to the first mentioned port, the inner end of said plug having a vertically arranged opening formed therein, a valve pivotally mounted within said plug and normally acting to close said second mentioned port, and a set screw threaded into the casing and eX- tending into said opening, said screw adapted to open said valve and serving to lock said plug within the casing.

I11 testimony whereof I afliX my signature in presence of two witnesses.

VAN E. SANFORD. Witnesses:

C. A. ZERKLE, T. S. MoCoMAs.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). 0.", Y 

